Front Panel Controls And Features; Rear Panel Controls And Features - Toa P-924A Operating Instructions Manual

Front Panel Controls and Features

Item Name
1
POWER Applies line power. Two-position
ON-OFF pushbutton switch for on-off modes.
SWITCH
2 METER Indicates the output level of the
amplifier. At rated output, it shows
0 VU (at continuous sine-wave
signal input).
When power is turned on, meter
illuminates.
3 INPUT Adjust gain of INPUT.
VOLUME
CONTROL
4 PROTECTION This LED indicator comes on and goes
INDICATOR out in about 5 seconds after the power
(RED) switch is turned on.
If the LED indicator remains lit
indicating that a muting relay is not
activated, turn the power switch off
after disconnecting the speaker line
and turn it on again. As a result,
1. if the LED indicator goes out in
about 5 seconds, the speaker line
may be short-circuited or
overloaded.
Check the speaker line.
2. unless the LED indicator still goes
out, abnormality has occurred in the
power amplifier stage.
Check the power amplifier stage.
NORMAL Lights up when the amplifier is
5
INDICATOR normally working.
(GREEN)
Function/Description
— 1 —

Rear Panel Controls and Features

Name
Item
1
Connects to power source.
AC POWER
SUPPLY
CORD
2 AC OUTLET Provides AC power for auxiliary equip-
(Unswitched) ment with power consumption of up to
500W.
3 AC FUSE Protects amplifier from excessive current
drain. Replace only with same type fuse.
4 DC FUSE (-) Refer to qualified service personnel if
fuse blows repeatedly.
5 DC FUSE (+) AC FUSE
DC FUSE (-)
DC FUSE (+)
6 OUTPUT Connect to speakers.
TERMINALS
MODULE
7 Accepts PLUG-IN MODULES which are
INPUT optionally available. Module selection is
PORT determined by application.
Cuts off unnecessary low frequency.
8 LOW-CUT
SWITCH
9 INPUT Selects input sensitivity. Place in "1V
LEVEL (0dBv)" position when normally used
SWITCH as a power amplifier.
Note: The position of INPUT-LEVEL
SWITCH should be changed according to
modules used or equipment connected to
DIRECT INPUT TERMINAL.
10 DIRECT Connects directly to external equipment
INPUT without using modules. Unbalanced
TERMINAL 10k ohms.
11 EARTH Normally connects to a record player's
TERMINAL ground.
Function /Description
250V 7A
250V 8A
250V 8A